Composite floor construction.



1. w. WILSON. COMPOSITE FLOOR CONSTRUCTION.

' APPLICATION FILED DBC. 24, 1909.A 999,286. Patented Aug. 1, 1911.

Ulm@ Wm,

gw. 51M

Fig. s.

.Wall to Wall of the building.

FRANCIS XV. WILSIL 0F BOSTON, MASSACHUSETTS.

COMTEOSITE FLOOR CONSTRUCTGN.

Application :filed ecember 24, 1909.

speeiiication like letters on the drawingsV representing like parte.

This invention vrelates to a oom )osito iioor construction 'for Concrete buildings and has for its object to provide a. door construetion. Which is conposed in part of concrete and in part of wood or lilie non-metallio material, whereby the 'oost of concrete buildu ings may be materially reduced Without materially detraeting from the lire-proof quali ties of the building. For this purmsej enr ploy a skeleton floor trame of concrete, and a flooring` proper'eomposed of Wood or like non-metallic iibrous material, which is suitably fastened to the eener-ete skeleton frame.

Figure l is a pian view with parts broken away of a sutlieient portion or' a composite floor construction embodying this invention, to enable it to be understood. Fig. 2, an enlarged detail in section, taken on the line 2 2. Fig. l. and Fig. 3, an enlarged detail in section, taken on the line Fig'. l.

Referring to the drawings, o., l). represent sets of eoneretesupporting members7 such. as girders and beams7 which may be ot any suitable or usual Construction and one of which is, and 'preferably both are `i"shaped in eross section and arranged herein shown substanti; .v at right i "les to each other so to leave substan.A y narrow open spaces e and forni a monolithic sueleton concrete iioor .frame extending from The concrete skeleton frame has laid upon it floor boards of Wood or other non-metallie fibrous ma terial.I and in thepresent instance7 two layers d, e oi" iioor boards are shown, which cover the openings@ and 'for' i a continuous ,door surface. The layer d of door 'boards constitutes the under door, and the layer e the upper Hoor, which is nailed or otherwise secured in the usual manner to the under door, which latter is' firmly secured to the concrete skeleton frame.

In the present instance, l have shown one method oi' firmly securing the under `door to the concrete skeleton traine. and While l 'may prefer the arrangement herein shown,

Specification of Letters Patent.

Patented litri?. i. 19ML Serial No. 534,756.

l do not desire to limit the invention in this respect.

ln the eonstruetion herein shown, the eoncrete skeleton door frame has secured to the opposite sides or its girders L and beams 7J pieces f ofvvood orv other non-metallic material, which are fastened to said girders and beams by bolts g extended transversely through the sameg and preferably through iron or steel tubes ft embedded in said girders or beams.. or they may be otherwise fastened. and-in practice the pieces f may be part ol the mold in which the girder or beam. is formed. l'The Wooden pieces f form anchoring devices for the under floor and afford means to which the said loor may be nailed, in a manner vwell understood.

The concrete girders and beams a, Z) may be o1" ary suitable or usual eonstruetion eX- cept that the cross piece or head is made of sufficient length to obtain the desired strength above the neutral axis of the girder or beam and are provided with the usual metal reinforcement i0. ln a. girder 12 insbes Wide, the head is made 30 inches Wide, and in a beam 7 inches Wide7 the head is made l@ inches Wide.

The Wood Hoor above the concrete gir-rt ers and beams may be leveled by a filling 12 of Wood shown in Fig. 2 or ol oinder concrete as shown in Fig. 3.

From the above description and by referenoe to the drawing.I it will be seen that the oost of the concrete building may be materially reduced Without materially diminishing the tire-proof qualities of the building as the columns and foundations are required to sustain a ma" ially less Weight of the Concrete 'portion ot the iioor, and theretore may be materially reduced in size With corresponding' reduction in cost.

By reference to Figs. 2 and 3, it will be seen that the floor h as a bearing on the frame iio prising a monolithicV reinforced skeleton tioor frame composed of sets of supporting members extending at an angle to each other and one ofwhich sets is T-shaped in crosssection-to leave a plurality of substantially narrow open spaces, non-metallic anchoring pieces secured to the heads of the T-shaped members, and a foor of non-metallic material -Y firmly secured to said anchoring pieces, substantially as described. y

2. A composite ioorhconstruction, comprising a monolithic reinforced concrete skeleton floor frame composed of reinforced concrete .T-shaped girders and beams having substantially wideH beadwpor-tions extended beyond the Vertical portionsftd'fornr.sub-

stantially( narrofw open spaces between ad- Vjacent heads, pieces of non-metallic fibrous material located on opposite sides"ofthe-- head portions ofsaid girders and beams and secured thereto, and a floor of nonymetallic fibrous material supported-by and rmly secured to said side pieces, substantially as described.

3. A composite Hoor construction, comprising a concrete iioor frame composed of substantially T-shaped *reinforced concrete girders and beams arranged at an angle to each other to leave open spaces, pieces of wood located on opposite sides of the head of the. T-shaped girders and beams, -means extended through the heads of said girders and beams to secure said pieces to said girders and beams, and a wood floor secured to said side pieces and resting onsaid heads, substantially as described.

In testimony whereof, l have signed my name to this speciication ir'the presence of two subscribing witnesses.

FRANCIS w. wiLsoN.

Witnesses:

' JAsNH. CHURCHILL,

J. MURIjrIY. 

